package exception_homework;
/**
 * java异常处理机制:try...catch
 *
 */
public class TryCatchDemo {
    public static void main(String[] args) {
        System.out.println("程序开始了...");
        try {
            String line = null;
            System.out.println(line.length());
        }catch (NullPointerException e){
            System.out.println("捕获了一个异常,并解决了..");
        }
        System.out.println("程序结束了...");
    }
}
